I just guess from the result plans and its names:
1. idx = index = properties , relationship and namespace alias
2. Any kind of alias must have a way to locate unique GPS record/mark. And vice versa.
3. Venus maps has unreliable distant-trip plan ---> such kind of coordination and alias seems less valid.
4. if the shifted GPS marks are used by aliases and their indexes, it might be impossible to offer a Venus version. In such a case precondition #1-2 ( #2 might be a false one) in this case might not be satisfied.-- e.g., for multi-connected points in several blocks , which are already orphan OR folded in Venus, their relationships and properties are already broken . Even their namespace aliases are consistent with corrected GPS marks, it will not work any more.
And for this reason and this result, inter-blocks {route} Mechanism is hard to rebuild in Venus.
Above is not based on any kind of research as syzygy has already done. I just tried to discuss this possibility in viewpoints of database and data structures --- could be nonsense as well.
Ander:
junction=crossing query
Intersection might be detailed address ( street, bld. number ) query. I have no such a device, try yourself.